Jim -
Yeah, there have been more than a few DR-7s blown by someone missing a
pin or two.
The chassis is gold _Alodine_ not Anodize. Alodine is conductive and
is just a dye soaked into the aluminum "pores" after a quick caustic
bath. Anodiz(s)ed aluminum is non-conductive, and is a thin shell of
electrolytically "enhanced" oxidation, very hard and scratch resistant.
The 7 Line also uses a considerably darker blue film and is "front
mounted" for a more modern "black-out" appearance. :-) The Lee #172
film is very close to the original, it just looks darker when it's "out
front". I wish Drake had spent another penny or two and provided
slots in the dial escutcheon rather than the "melting plastic" method.
Fortunately, the film being out front makes it less susceptible to
fading, UNLESS it sits in a brightly lit (sunlit window) area
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B, C-Line & TR-4/C Service Supplement CDs
<www.k4oah.com>
Jim Shorney wrote:
On Sat, 29 Nov 2008 17:44:16 -0500, Garey Barrell wrote:
The reason appears to be that the "white" paint on the reflectors of the
dial and meter housing tends to yellow with age, and this is where the
"tint" is coming from. When the blue film fades a little bit,
(difficult to see unless you put it on a sheet of white paper,) the
yellow overpowers it and _blue-green_ dials...
After thinking about this for a minute, I realised that the 7-line
doesn't have white reflectors. The gold-colored anodising on the
aluminum chassis must be having the same effect. Soooo .... who wants
to take a can of spray paint to thier TR7 and report back? :)
I like the LED replacements for the 7-line mostly because of the PITA
factor of pulling the DR7 to change the PTO lamp. That's a recipe for
disaster if I've ever seen one.
73
-Jim
NU0C
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